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1 | /* | |
2 | * This file is part of the libsigrok project. | |
3 | * | |
4 | * Copyright (C) 2012 Bert Vermeulen <bert@biot.com> | |
5 | * | |
6 | * This program is free software: you can redistribute it and/or modify | |
7 | * it under the terms of the GNU General Public License as published by | |
8 | * the Free Software Foundation, either version 3 of the License, or | |
9 | * (at your option) any later version. | |
10 | * | |
11 | * This program is distributed in the hope that it will be useful, | |
12 | * but WITHOUT ANY WARRANTY; without even the implied warranty of | |
13 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
14 | * GNU General Public License for more details. | |
15 | * | |
16 | * You should have received a copy of the GNU General Public License | |
17 | * along with this program. If not, see <http://www.gnu.org/licenses/>. | |
18 | */ | |
19 | ||
20 | #include <glib.h> | |
21 | #include <libusb.h> | |
22 | #include "libsigrok.h" | |
23 | #include "libsigrok-internal.h" | |
24 | #include "protocol.h" | |
25 | ||
26 | SR_PRIV struct sr_dev_inst *lascar_scan(int bus, int address); | |
27 | SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info; | |
28 | static struct sr_dev_driver *di = &lascar_el_usb_driver_info; | |
29 | static int hw_dev_close(struct sr_dev_inst *sdi); | |
30 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data); | |
31 | ||
32 | static const int hwopts[] = { | |
33 | SR_HWOPT_CONN, | |
34 | 0, | |
35 | }; | |
36 | ||
37 | static const int hwcaps[] = { | |
38 | SR_HWCAP_THERMOMETER, | |
39 | SR_HWCAP_HYGROMETER, | |
40 | SR_HWCAP_LIMIT_SAMPLES, | |
41 | 0 | |
42 | }; | |
43 | ||
44 | static const char *probe_names[] = { | |
45 | "P1", | |
46 | }; | |
47 | ||
48 | ||
49 | /* Properly close and free all devices. */ | |
50 | static int clear_instances(void) | |
51 | { | |
52 | struct sr_dev_inst *sdi; | |
53 | struct drv_context *drvc; | |
54 | struct dev_context *devc; | |
55 | GSList *l; | |
56 | ||
57 | if (!(drvc = di->priv)) | |
58 | return SR_OK; | |
59 | ||
60 | for (l = drvc->instances; l; l = l->next) { | |
61 | if (!(sdi = l->data)) | |
62 | continue; | |
63 | if (!(devc = sdi->priv)) | |
64 | continue; | |
65 | ||
66 | hw_dev_close(sdi); | |
67 | sr_usb_dev_inst_free(devc->usb); | |
68 | sr_dev_inst_free(sdi); | |
69 | } | |
70 | ||
71 | g_slist_free(drvc->instances); | |
72 | drvc->instances = NULL; | |
73 | ||
74 | return SR_OK; | |
75 | } | |
76 | ||
77 | static int hw_init(struct sr_context *sr_ctx) | |
78 | { | |
79 | struct drv_context *drvc; | |
80 | ||
81 | if (!(drvc = g_try_malloc0(sizeof(struct drv_context)))) { | |
82 | sr_err("Driver context malloc failed."); | |
83 | return SR_ERR_MALLOC; | |
84 | } | |
85 | ||
86 | drvc->sr_ctx = sr_ctx; | |
87 | di->priv = drvc; | |
88 | ||
89 | return SR_OK; | |
90 | } | |
91 | ||
92 | static GSList *hw_scan(GSList *options) | |
93 | { | |
94 | struct drv_context *drvc; | |
95 | struct dev_context *devc; | |
96 | struct sr_dev_inst *sdi; | |
97 | struct sr_usb_dev_inst *usb; | |
98 | struct sr_probe *probe; | |
99 | struct sr_hwopt *opt; | |
100 | GSList *usb_devices, *devices, *l; | |
101 | const char *conn; | |
102 | ||
103 | (void)options; | |
104 | ||
105 | if (!(drvc = di->priv)) { | |
106 | sr_err("Driver was not initialized."); | |
107 | return NULL; | |
108 | } | |
109 | ||
110 | /* USB scan is always authoritative. */ | |
111 | clear_instances(); | |
112 | ||
113 | conn = NULL; | |
114 | for (l = options; l; l = l->next) { | |
115 | opt = l->data; | |
116 | switch (opt->hwopt) { | |
117 | case SR_HWOPT_CONN: | |
118 | conn = opt->value; | |
119 | break; | |
120 | } | |
121 | } | |
122 | if (!conn) | |
123 | return NULL; | |
124 | ||
125 | devices = NULL; | |
126 | if ((usb_devices = sr_usb_find(drvc->sr_ctx->libusb_ctx, conn))) { | |
127 | /* We have a list of sr_usb_dev_inst matching the connection | |
128 | * string. Wrap them in sr_dev_inst and we're done. */ | |
129 | for (l = usb_devices; l; l = l->next) { | |
130 | usb = l->data; | |
131 | if (!(sdi = lascar_scan(usb->bus, usb->address))) { | |
132 | /* Not a Lascar EL-USB. */ | |
133 | g_free(usb); | |
134 | continue; | |
135 | } | |
136 | if (!(devc = g_try_malloc0(sizeof(struct dev_context)))) { | |
137 | sr_err("Device context malloc failed."); | |
138 | return NULL; | |
139 | } | |
140 | devc->usb = usb; | |
141 | sdi->priv = devc; | |
142 | if (!(probe = sr_probe_new(0, SR_PROBE_ANALOG, TRUE, "P1"))) | |
143 | return NULL; | |
144 | sdi->probes = g_slist_append(sdi->probes, probe); | |
145 | drvc->instances = g_slist_append(drvc->instances, sdi); | |
146 | devices = g_slist_append(devices, sdi); | |
147 | } | |
148 | g_slist_free(usb_devices); | |
149 | } else | |
150 | g_slist_free_full(usb_devices, g_free); | |
151 | ||
152 | return devices; | |
153 | } | |
154 | ||
155 | static GSList *hw_dev_list(void) | |
156 | { | |
157 | struct drv_context *drvc; | |
158 | ||
159 | drvc = di->priv; | |
160 | ||
161 | return drvc->instances; | |
162 | } | |
163 | ||
164 | static int hw_dev_open(struct sr_dev_inst *sdi) | |
165 | { | |
166 | /* TODO */ | |
167 | ||
168 | return SR_OK; | |
169 | } | |
170 | ||
171 | static int hw_dev_close(struct sr_dev_inst *sdi) | |
172 | { | |
173 | /* TODO */ | |
174 | ||
175 | return SR_OK; | |
176 | } | |
177 | ||
178 | static int hw_cleanup(void) | |
179 | { | |
180 | clear_instances(); | |
181 | ||
182 | /* TODO */ | |
183 | ||
184 | return SR_OK; | |
185 | } | |
186 | ||
187 | static int hw_info_get(int info_id, const void **data, | |
188 | const struct sr_dev_inst *sdi) | |
189 | { | |
190 | switch (info_id) { | |
191 | /* TODO */ | |
192 | default: | |
193 | sr_err("Unknown info_id: %d.", info_id); | |
194 | return SR_ERR_ARG; | |
195 | } | |
196 | ||
197 | return SR_OK; | |
198 | } | |
199 | ||
200 | static int hw_dev_config_set(const struct sr_dev_inst *sdi, int hwcap, | |
201 | const void *value) | |
202 | { | |
203 | int ret; | |
204 | ||
205 | if (sdi->status != SR_ST_ACTIVE) { | |
206 | sr_err("Device inactive, can't set config options."); | |
207 | return SR_ERR; | |
208 | } | |
209 | ||
210 | ret = SR_OK; | |
211 | switch (hwcap) { | |
212 | /* TODO */ | |
213 | default: | |
214 | sr_err("Unknown hardware capability: %d.", hwcap); | |
215 | ret = SR_ERR_ARG; | |
216 | } | |
217 | ||
218 | return ret; | |
219 | } | |
220 | ||
221 | static int hw_dev_acquisition_start(const struct sr_dev_inst *sdi, | |
222 | void *cb_data) | |
223 | { | |
224 | /* TODO */ | |
225 | ||
226 | return SR_OK; | |
227 | } | |
228 | ||
229 | static int hw_dev_acquisition_stop(struct sr_dev_inst *sdi, void *cb_data) | |
230 | { | |
231 | (void)cb_data; | |
232 | ||
233 | if (sdi->status != SR_ST_ACTIVE) { | |
234 | sr_err("Device inactive, can't stop acquisition."); | |
235 | return SR_ERR; | |
236 | } | |
237 | ||
238 | /* TODO */ | |
239 | ||
240 | return SR_OK; | |
241 | } | |
242 | ||
243 | SR_PRIV struct sr_dev_driver lascar_el_usb_driver_info = { | |
244 | .name = "lascar-el-usb", | |
245 | .longname = "Lascar EL-USB", | |
246 | .api_version = 1, | |
247 | .init = hw_init, | |
248 | .cleanup = hw_cleanup, | |
249 | .scan = hw_scan, | |
250 | .dev_list = hw_dev_list, | |
251 | .dev_clear = clear_instances, | |
252 | .dev_open = hw_dev_open, | |
253 | .dev_close = hw_dev_close, | |
254 | .info_get = hw_info_get, | |
255 | .dev_config_set = hw_dev_config_set, | |
256 | .dev_acquisition_start = hw_dev_acquisition_start, | |
257 | .dev_acquisition_stop = hw_dev_acquisition_stop, | |
258 | .priv = NULL, | |
259 | }; |